27matrix explores some of the processes that I have used in recent notated works in an interactive electronic context. These processes create 'live' a number of pretty rich environments in response to a soloist/improvisor: combining a very significant degree of freedom, while at the same time creating structure that is fixed to a degree. As the title suggests, the principal feature of the piece is a 27 unit cypher (5-3-2-2-1-4-4-5-1) that defines various musical parameters in various ways.